So you just spent about 10 minutes getting everyone's junction just right, giving them just the right magic for what they need to do. Then Ellone decides to send you into the past. This happens mostly in the later times when you get to chose which party member gets to be which person from the past. You see that you can chose highly junctioned Zell to be Kiros.... but it doesn't matter because he's back to his crappy unjunctioned health and you realize. Crap everyone but Squall's junction is gone!
Personality I think I'd be alright without "Sis" here...